Date.prototype.format = function (format) {
  var o = {
    "M+": this.getMonth() + 1, //month
    "d+": this.getDate(), //day
    "h+": this.getHours(), //hour
    "m+": this.getMinutes(), //minute
    "s+": this.getSeconds(), //second
    "q+": Math.floor((this.getMonth() + 3) / 3), //quarter
    "S": this.getMilliseconds() //millisecond
  }
  if (/(y+)/.test(format)) format = format.replace(RegExp.$1,
    (this.getFullYear() + "").substr(4 - RegExp.$1.length));
  for (var k in o)
    if (new RegExp("(" + k + ")").test(format))
      format = format.replace(RegExp.$1,
        RegExp.$1.length == 1 ? o[k] :
        ("00" + o[k]).substr(("" + o[k]).length));
  return format;
};

App({
  onLaunch() {
    // 登录
    wx.login({
      success: res => {
        // 发送 res.code 到后台换取 openId, sessionKey, unionId
      }
    })
  },
  globalData: {
    userInfo: null,
    recentOrder: null
  }
})
